AP-IP120 IP phone PTT (Push to Talk) terminal mode for RoIP (Radio over IP) service

AP-IP120  IP phone supports high quality VoIP and PTT (Push-to-talk) communication with satellite network and internet. It supports optimal level of internet based voice communication and PTT service through handset and function key. Also, this terminal supports point-to-point PTT communication mode and point-to-multipoint communication mode for LMR gateway interworking. For multipoint group PTT communication service mode, additional extra call manager and PTT server are necessary.

AP-IP120  IP phone is a high performance, multi function IP based PTT control terminal by adopting state-of-the-art PTT processing technology with SIP signal processing function. SIP based AddPac PTT group call solution is composed of IPNext180PTT IP-PBX with PTT server function, LMR (Land-to-Mobile Radio) gateways, PTT control terminal. AddPac PTT group call solution is designed on the basis of IP, so that it is capable of satellite communication application as well as wire network integration. It allows saving communication cost due to the state-of-the-art VoIP technology and support 1:1, group call service in any places. The biggest advantage of AP-IP120 is to maintain existing radio device system by supporting radio device network interworking function. AP-IP120 supports group call service by expanding radio device network coverage to worldwide satellite.

You may use AP-IP120 in any places with internet connection due to low bit rate realtime VoIP codec like as G.711, G.726, G.729a, G.723.1 voice codec. It supports the QoS (Quality of Service) function to provide the high quality sound in limited bandwidth environment.

Network Diagram